You can try using the value "72" for the "interrupts" entry. This can be found in the Vybrid reference manual at table 3-1, Interrupt Assignment, as the NVIC Interrupt ID for i2c1. The other device tree that you link to specifies the GIC interrupt ID values.

You can try using the value "72" for the "interrupts" entry. This can be found in the Vybrid reference manual at table 3-1, Interrupt Assignment, as the NVIC Interrupt ID for i2c1. The other device tree that you link to specifies the GIC interrupt ID values.